Speaker
Description
We calculate the total and partial shear viscosity of hadrons
produced in central gold-gold collisions at intermediate energies. For
calculations of the collisions the transport model UrQMD is employed.
The shear viscosity is obtained within the framework of Green-Kubo
formalism. The hadron resonance gas (HRG) model is used to determine
temperature and chemical potentials of baryon charge and strangeness
out of the microscopic model calculations. Then, we determine the
partial viscosity of main hadron species, such as nucleons, pions,
kaons and Lambdas, by studying the relaxation of hot and dense nuclear
matter in the box with periodic boundary conditions.
It is found that the decrease of the beam energy from
$E_{lab} = 40$~AGeV to 10~AGeV leads to rise of baryon shear viscosity
accompanied by drop of shear viscosity of mesons. In contrast to that
of non-strange hadron species, the shear viscosity of kaons and Lambdas
remains independent on energy within the studied energy range. Its
ratio over the entropy density increases with the drop of temperature
and rise of baryon chemical potential.
| The speaker is a student or young scientist | No |
|---|---|
| Section | 3. Intermediate and high energies, heavy ion collisions |
